Three-phase Multi-resonant Converter With Wide-output-voltage Range

被引：0
作者：
Zhao Q. [1 ]
Guo D. [1 ]
Zhang D. [1 ]
Wang D. [1 ]
Zheng Y. [1 ]
机构：
[1] Key Lab of Power Electronics for Energy Conservation, Yanshan University, Motor Drive of Hebei province, Hebei Province, Qinhuangdao
来源：
Dianwang Jishu/Power System Technology | 2022年 / 46卷 / 10期
基金：
中国国家自然科学基金;
关键词：
multi-resonance; soft switching; three-phase converter; variable frequency control; wide-range gain;
D O I：
10.13335/j.1000-3673.pst.2021.1614
中图分类号：
学科分类号：
摘要：
Energy storage devices in the Energy Internet require the converters with high efficiency and a wide range of output voltage. With the characteristics of soft switching and high efficiency, the LLC resonant converter has already obtained widespread applications. However, the LLC resonant converter has large output current ripples, and it is difficult to regulate the voltage at light loads, that is, it has insufficient ability to output a wide range voltage. To solve these problems, a three-phase multi-resonant converter (LLC-LC) with a wide voltage range output is proposed. To increase the gain range, an LC notch filter is introduced in each phase of the three-phase LLC resonant network. The output signals between the three phases are shifted by 120°, reducing the output capacitor current ripples and the output filter sizes. The converter has the function of automatic current sharing because of the star connection between the multi-resonant networks of each phase. The primary-side switches realize zero-voltage switching (ZVS) in the entire working range, and the secondary-side rectifier diodes achieve zero-current switching (ZCS). From the perspective of gain and efficiency, the fundamental wave analysis is used to optimize the resonant parameters of the converter, and the advantages of the converter are verified by comparing with the traditional three-phase LLC resonant converter in experiments. © 2022 Power System Technology Press. All rights reserved.
引用
收藏
页码：4085 / 4094
页数：9
相关论文
共 23 条
  • [11] HU Haibing, WANG Wanbao, SUN Wenjin, Optimal efficiency design of LLC resonant converters[J], Proceedings of the CSEE, 33, 18, pp. 48-56, (2013)
  • [12] WU Dongchun, WANG Yan, LI Zhengfei, Charger Based on Immittance Network With the Function of Voltage Equalization[J], Power System Technology, 45, 9, pp. 3714-3721, (2021)
  • [13] ZHAO Qinglin, LIU Huifeng, YUAN Jing, An interleaved full-bridge LLC resonant converter with phase shift compensation[J], Transactions of China Electrotechnical Society, 33, 12, pp. 2777-2787, (2018)
  • [14] XU Yuzhen, LIN Weiming, A parallel LLC resonant converter with automatic current sharing characteristics[J], Proceedings of the CSEE, 38, 22, pp. 6671-6682, (2018)
  • [15] JIN Taotao, SMEDLEY K．, Multiphase LLC series resonant converter for microprocessor voltage regulation[C], Proceedings of Conference Record of the 2006 IEEE Industry Applications Conference, pp. 2136-2143, (2006)
  • [16] NOAH M, ISHIBASHI H, A current sharing method utilizing single balancing transformer for a multiphase LLC resonant converter with integrated magnetics[J], IEEE Journal of Emerging and Selected Topics in Power Electronics, 6, 2, pp. 977-992, (2018)
  • [17] Chao FEI, GADELRAB R, Qiang LI, High-frequency three-phase interleaved LLC resonant converter with GaN devices and integrated planar magnetics[J], IEEE Journal of Emerging and Selected Topics in Power Electronics, 7, 2, pp. 653-663, (2019)
  • [18] CAO Jinzhou, ZHANG Xiaoyong, RAO Peinan, Design of three-phase delta-delta LLC resonant converter[C], Proceedings of 2020 IEEE Vehicle Power and Propulsion Conference (VPPC), pp. 1-5, (2020)
  • [19] ZHAO Qinglin, Wei LIU, WANG Yujie, A novel multiresonant DC-DC converter with wide output-voltage range[J], IEEE Transactions on Power Electronics, 35, 6, pp. 5625-5638, (2020)
  • [20] Lin SHI, LIU Bangyin, A burst-PWM hybrid control method for wide output voltage range of LLC converter[J], Transactions of China Electrotechnical Society, 34, 22, pp. 4772-4780, (2019)
123